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Low-Cost RF Up/Downconverter with LNA and PA Driver

Product Details

The MAX2411A performs the RF front-end transmit/receive function in time-division-duplex (TDD) communication systems. It operates over a wide frequency range and is optimized for RF frequencies around 1.9GHz. Applications include most popular cordless and PCS standards. The MAX2411A includes a low-noise amplifier (LNA), a downconverter mixer, a local-oscillator buffer, an upconverter mixer, and a variable-gain power-amplifier (PA) driver in a low-cost, plastic surface-mount package. The MAX2411A's unique bidirectional, differential IF port reduces cost and component count by allowing the transmit and receive paths to share the same IF filter.

The LNA has a 2.4dB typical noise figure and a -10dBm input third-order intercept point (IP3). The downconverter mixer has a low 9.2dB noise figure and 4dBm input IP3. Image and local-oscillator filtering are implemented off-chip for maximum flexibility. The PA driver amplifier has 15dB of gain, which can be reduced over a 35dB range. Power consumption is only 60mW in receive mode and 90mW in transmit mode and drops to less than 3µW in shutdown mode.

For applications requiring separate, single-ended IF input and output ports, refer to the MAX2410 data sheet. For applications requiring only a receive function, Maxim offers a low-cost downconverter with LNA (see the MAX2406 data sheet).

Key Features

  • Low-Cost Silicon Bipolar Design
  • Integrated Upconvert/Downconvert Function
  • Operates from a Single +2.7V to +5.5V Supply
  • 3.2dB Combined Receiver Noise Figure:
    • 2.4dB (LNA)
    • 9.2dB(mixer)
  • Flexible Power-Amplifier Driver:
    • 18dBm Output Third-Order Intercept (OIP3)
    • 35dB Gain-Control Range
  • LO Buffer for Low LO Drive Level
  • Low Power Consumption:
    • 60mW Receive
    • 90mW Full-Power Transmit
  • 0.3µW Shutdown Mode
  • Flexible Power-Down Modes Compatible with MAX2510/MAX2511 IF Transceivers

Applications/Uses

  • DCS1800 or PCS1900 Single-Mode Phones
  • DECT
  • Iridium Handsets
  • ISM-Band Transceiver
  • PHS/PACS
  • PWT1900
Parametric specs for RF Transceivers > 1GHz
Duplex Method TDD
Frequency Range (MHz) 800 to 2400
Inputs 1 Rx
Outputs 1 Tx
Tx OIP3 Power (dBm) (max) 18
Rx Noise Figure (dB) 3.2
Package/Pins QSOP/28
Budgetary
Price (See Notes)
$3.64 @1k
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Simplified Block Diagram

MAX2411A: Typical Operating Circuit MAX2411A: Typical Operating Circuit Zoom icon

Technical Docs

Design & Development

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Description

The MAX2411A evaluation kit (EV kit) simplifies testing of the MAX2411A. This EV kit allows evaluation of the MAX2411A's low-noise amplifier (LNA), receive downconverter mixer, transmit upconverter mixer, variable-gain power-amplifier (PA) driver, and power-management features.

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Features

  • +2.7V to +5.5V Single-Supply Operation
  • 50Ω SMA Inputs and Outputs on RF and IF Ports
  • Allows Testing of Shutdown Mode
  • Fully Assembled and Tested

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Parameters

Parametric specs for RF Transceivers > 1GHz
Duplex Method TDD
Frequency Range (MHz) 800 to 2400
Inputs 1 Rx
Outputs 1 Tx
Tx OIP3 Power (dBm) (max) 18
Rx Noise Figure (dB) 3.2
Package/Pins QSOP/28
Budgetary
Price (See Notes)
$3.64 @1k

Key Features

  • Low-Cost Silicon Bipolar Design
  • Integrated Upconvert/Downconvert Function
  • Operates from a Single +2.7V to +5.5V Supply
  • 3.2dB Combined Receiver Noise Figure:
    • 2.4dB (LNA)
    • 9.2dB(mixer)
  • Flexible Power-Amplifier Driver:
    • 18dBm Output Third-Order Intercept (OIP3)
    • 35dB Gain-Control Range
  • LO Buffer for Low LO Drive Level
  • Low Power Consumption:
    • 60mW Receive
    • 90mW Full-Power Transmit
  • 0.3µW Shutdown Mode
  • Flexible Power-Down Modes Compatible with MAX2510/MAX2511 IF Transceivers

Applications/Uses

  • DCS1800 or PCS1900 Single-Mode Phones
  • DECT
  • Iridium Handsets
  • ISM-Band Transceiver
  • PHS/PACS
  • PWT1900

Description

The MAX2411A performs the RF front-end transmit/receive function in time-division-duplex (TDD) communication systems. It operates over a wide frequency range and is optimized for RF frequencies around 1.9GHz. Applications include most popular cordless and PCS standards. The MAX2411A includes a low-noise amplifier (LNA), a downconverter mixer, a local-oscillator buffer, an upconverter mixer, and a variable-gain power-amplifier (PA) driver in a low-cost, plastic surface-mount package. The MAX2411A's unique bidirectional, differential IF port reduces cost and component count by allowing the transmit and receive paths to share the same IF filter.

The LNA has a 2.4dB typical noise figure and a -10dBm input third-order intercept point (IP3). The downconverter mixer has a low 9.2dB noise figure and 4dBm input IP3. Image and local-oscillator filtering are implemented off-chip for maximum flexibility. The PA driver amplifier has 15dB of gain, which can be reduced over a 35dB range. Power consumption is only 60mW in receive mode and 90mW in transmit mode and drops to less than 3µW in shutdown mode.

For applications requiring separate, single-ended IF input and output ports, refer to the MAX2410 data sheet. For applications requiring only a receive function, Maxim offers a low-cost downconverter with LNA (see the MAX2406 data sheet).

Simplified Block Diagram

MAX2411A: Typical Operating Circuit MAX2411A: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal